77 Lubricants Mono Engine Oil SA 50

77 Lubricants77 Lubricants Mono Engine Oil linepassenger cars50

Single-grade SAE 50 engine oil to API SA for engines of early design.

Classification
Product line 77 Lubricants Mono Engine Oil 7 oils
SAE viscosity 50What SAE means
Intended use passenger cars
API class
  • SA
What API means
Typical properties
Viscosity at 40 °C 252.7 mm²/s
Viscosity at 100 °C 20.7 mm²/s
Viscosity index 97
Pour point -18 °C
Flash point >201 °C
Density 897 kg/m³

Description

77 Lubricants Mono Engine Oil SA 50 is a single-grade SAE 50 engine oil from the Mono Engine Oil line, intended for a range of early engine designs.

It is rated API SA; the maker claims no car manufacturer approvals and no compliance with other specifications.

Typical data-sheet figures: kinematic viscosity 20.7 mm²/s at 100 °C and 252.7 mm²/s at 40 °C, viscosity index 97, pour point -18 °C, flash point above 201 °C.

Application

Engines of early design that call for a single-grade SAE 50 oil.

Worth knowing

The 77 Lubricants data sheet introduces the API SA level with the word “exceeds”. The SA class itself is obsolete: it is described as a level for engines running under conditions where additive protection of the parts is not needed, and an oil of this class is used only when the engine maker recommends it. So the basis for choosing it is a direct statement in the engine’s documentation, not merely a match on SAE 50 viscosity.

API regards every class of the S series up to and including SH as obsolete, and such an oil may fail to protect a modern engine; the current classes are listed in the article on API SQ, ILSAC GF-7 and the current API classes. The rest of the range, including oils with diesel API classes, is on the 77 Lubricants Mono Engine Oil page.

Data current as of Check the label and the current product data sheet before you buy.

Sources

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